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Yet the benefits of this approach for important parallel workloads have not been investigated in detail. In this paper, we use a validated simulation approach to explore the noise-mitigation effects of idealized nonblocking collectives, in workloads where these collectives are a major contributor to total execution time. Although nonblocking collectives are unlikely to provide significant noise mitigation to applications in the low operating system noise environments expected in next-generation high-performance computing systems, we show that they can potentially improve application runtime with respect to other noise types.<\/jats:p>","DOI":"10.1177\/1094342015611952","type":"journal-article","created":{"date-parts":[[2015,11,2]],"date-time":"2015-11-02T21:33:48Z","timestamp":1446500028000},"page":"121-133","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":10,"title":["On noise and the performance benefit of nonblocking collectives"],"prefix":"10.1177","volume":"30","author":[{"given":"Patrick M","family":"Widener","sequence":"first","affiliation":[{"name":"Center for Computing Research, Sandia National Laboratories, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Scott","family":"Levy","sequence":"additional","affiliation":[{"name":"Department of Computer Science, University of New Mexico, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kurt B","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Center for Computing Research, Sandia National Laboratories, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Torsten","family":"Hoefler","sequence":"additional","affiliation":[{"name":"Computer Science Department, ETH Z\u00fcrich, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2015,11,2]]},"reference":[{"key":"bibr1-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1007\/s10586-007-0047-2"},{"key":"bibr2-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1177\/1094342005054257"},{"key":"bibr3-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1109\/CGO.2009.32"},{"key":"bibr4-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1145\/173284.155333"},{"key":"bibr5-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1016\/j.future.2004.11.016"},{"key":"bibr6-1094342015611952","unstructured":"Exascale Co-Design Center for Materials in Extreme Environments (ExMatEx) (2012) http:\/\/exmatex.lanl.gov\/ (accessed 16 January 2014)."},{"key":"bibr7-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1109\/SC.2008.5219920"},{"key":"bibr8-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1109\/SC.2014.77"},{"key":"bibr9-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1016\/j.parco.2013.06.001"},{"key":"bibr10-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1109\/SC.2010.22"},{"key":"bibr11-1094342015611952","volume-title":"Scientific and Engineering Computation","author":"Gropp W","year":"2014"},{"key":"bibr12-1094342015611952","doi-asserted-by":"publisher","DOI":"10.1016\/S0168-9274(01)00115-5"},{"key":"bibr13-1094342015611952","unstructured":"Heroux MA, Doerfler DW, Crozier PS, (2009) Improving performance via mini-applications. 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